རྡོ་རྗེ་གུར

DM

'Vajra tent,' the canopy of vajra that surrounds the mandala. Doboom, Buddhist Path to Enlightenment 60.

RY

Vajra Dome which is the Instruction Tantra of the Two Discernments ( བརྟག་གཉིས་མན་ངག་རྒྱུད). 

Vajra Dome: བརྟག་གཉིས་མན་ངག་རྒྱུད - Instruction Tantra of the Two Segments, Vajra Canopy